When I was married, my ex and I were part of a swingers group comprised of approximately 25 couples. It tended to be an older group ranging from forties to late sixties, so pregnancies were few and far between amongst the couples. One couple did leave after she was pregnant, but unlikely from the group play. I recall, that we did sign an agreement that members should practice safe sex, but I seldom saw condoms in use and most women were either on the pill or had a diaphragm. My ex was "fixed" so no issues. Since it was my first time in the swinger environment, I was initially surprised at the fact that very little protection was used. We were all required to produce STD health reports upon joining, but only that one time. Goodness, there were women that take three or four cum blasts during the course of an afternoon!